• 한국항해학회지
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• 제3권1호
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• pp.29-46
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• 1979

The climate of a given region is determined by the combination of the various climatic elements. But among them, the temperature is the most important element to classify the climatic type. The author attempted to classify the climatic types in Korea by making a analysis of the characteristics of temperature distribution. To accomplish the study, the author analyzed the daily and yearly range of temperature, the warmest and coldest months, continentality and oceanicity, thermal anomaly, and relative temperature, etc. The data of 153 weather stations are used for the analysis of the above five criteria. As a result of the study, the climate of Korea can be divided into three types, namely, the continental, coastal and intermediate(or transitional) type. The Pronounced continental type is appeared in the northern part of highland area. And the coastal type is limited to the east and south coast areas, and the southern part of the west coast area. The continentality is larger, and the oceanicity smaller, than those of Siberia, Mongolia and the inland area of China where the continental climate is most remarkable in the world. The reason why the west coast area is more continental than the east coast area may be due to the terrain effect and the warm current going north along the east coastline.

• 상하수도학회지
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• 제27권5호
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• pp.649-659
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• 2013

Real time control (RTC) can be broadly defined as a system that dynamically adjusts the operation of facilities in response to online measurements in the field to maintain and meet the operational objectives, both during dry and wet weather conditions. RTC adds a dynamic component that is actively adjusted in real time based on system conditions. In terms of reducing or eliminating sewer flooding, CSOs and/or managing flows, implementation of RTC has various benefits to sewer system operation. It has been emerging as an attractive approach, but related elements (such as framework for the application, its components and equipments, aspects to be considered) towards its application on sewer systems have not been throughly introduced so far. The main goal of this study is to review several applications of RTC and firm guidelines published abroad, and finally to provide a framework for the proper application of RTC on sewer systems.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 A
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• pp.88-90
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• 2004

Data are a critical utility asset. Collecting correct data on site leads to accurate information. Data, when gathered with foresight & properly formatted, are useful to both existing database and easily transferable to newer, more comprehensive historical outage data. However, when investigating data items options, the task, can be an arduous one, often requiring the efforts of entire committees. This paper firstly discusses the KEPCO's past 10 years of historical outage data which include meterological data, and also by several elements of the National Weather Service, failure rate, outage duration, and probability classification, etc. Then, these collected data are automatically stored in an Outage Data Management System (ODMS), which allows for easy access and display. ODMS has a straight-forward and easy-to-use interface. It lets you to navigate through modules very easily and allows insertion, deletion or editing of data. In particular, this will further provide the KEPCO that not only helps with probabilistic security assessment but also provides a platform for future development of Probability Estimation Program (PEP).

• 대한원격탐사학회지
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• 제24권1호
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• pp.79-89
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• 2008

Irregular temporal sampling is a common feature of geophysical and biological time series in remote sensing. This study proposes an on-line system for reconstructing observation image series contaminated by noises resulted from mechanical problems or sensing environmental condition. There is also a high likelihood that during the data acquisition periods the target site corresponding to any given pixel may be covered by fog or cloud, thereby resulting in bad or missing observation. The surface parameters associated with the land are usually dependent on the climate, and many physical processes that are displayed in the image sensed from the land then exhibit temporal variation with seasonal periodicity. A feedback system proposed in this study reconstructs a sequence of images remotely sensed from the land surface having the physical processes with seasonal periodicity. The harmonic model is used to track seasonal variation through time, and a Gibbs random field (GRF) is used to represent the spatial dependency of digital image processes. The experimental results of this simulation study show the potentiality of the proposed system to reconstruct the image series observed by imperfect sensing technology from the environment which are frequently influenced by bad weather. This study provides fundamental information on the elements of the proposed system for right usage in application.

• 대한한의학원전학회지
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• 제35권1호
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• pp.81-92
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• 2022

Objectives : This paper aims to analyze the origins of the pathogenic qi[邪氣] concept through analysis of related character shapes and examples within the Mawangdui Yishu, where we can grasp the state of medicine pre-Huangdineijing. Methods : Etymology was determined through ancient character analysis, while examples of its usage and original texts were compared to extract their implications. For usage analysis, medical texts of later periods that contained similar verses or contents with the Mawangdui text were compared, through which similarities and changes in meaning of the word or verse were examined. Conclusions : While the term 'xieqi(邪氣, pathogenic qi)' had not yet been mentioned in the Mawangdui text, 'eqi(惡氣)' was used similarly. Wind[風], cold[寒], dampness[濕] were not only understood as terms referring to weather or climate but possible causes for disease. Meanwhile, there was lingering belief from the Shang(商) period that saw disease as God's punishment, which could be seen as transition phenomenon from superstition to rational thought. Through diseases 'wind disease[風病]' and 'bi(痹)', we could determine that medicine at the time was limited to the Yin-yang theory, having not yet integrated the Five phases perspective. Moreover, the possibility of other pathogenic qi elements, 'heat[暑]', 'dryness[燥]', and 'fire[火]' could be assumed to have been embedded in 'wenbing(溫病)'.

• 한국시뮬레이션학회논문지
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• 제19권1호
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• pp.113-123
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• 2010

첨단 국방과학기술이 발전을 거듭하면서 군사 전문가들은 전투 네트워크 시스템에 대한 관심이 커지고 있다. 소규모 전투끼리 네트워크 형태로 이어지는 전투상황의 실전적 묘사를 위해 청군과 홍군의 배치와 편제무기체계의 특성에 따라 유효사거리와 살상반경을 반영하고 교전 결과 잔여부대의 부대 재조직을 위한 이동규칙을 지정하여 추가 교전의 기회를 제공하였다. 전투시나리오로 실전적으로 모의하므로 기존 모델과의 신뢰도 차이를 추구하였다. 무기체계 배치 변화, 전투원 이동속도, 측/후방공격을 포함하는 전술의 변화, 지형 및 기상 등의 변수가 포함된 향후 연구과제도 제시되었다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.389-391
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• 2021

국민의 안전을 위해 교통사고를 방지하고자 교통 규제는 계속 확대되고 있지만, 교통사고는 여전히 줄어들지 않고 있다. 본 연구에서는 기상청의 날씨 예측 데이터, 도로교통공단의 요일, 시간대, 장소별 교통사고 발생 데이터, 특정 위치 정보 등 다양한 요인들의 연관관계를 인공지능을 활용하여 분석함으로써 특정 시간, 장소에 대한 교통사고 발생 확률을 예측하고자 한다. 본 연구는 이전의 수많은 교통사고 발생에 대한 객관적인 데이터와 기존의 다른 연구들에서 활용되지 않은 다양한 추가 요소들을 접목시켜 더욱 향상된 교통사고 발생 확률 예측 모델을 도출한다. 본 연구 결과는 국민의 안전한 삶을 위한 다양한 교통 관련 서비스에 유용하게 활용될 수 있을 것이다.

• 국제학술발표논문집
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• The 4th International Conference on Construction Engineering and Project Management Organized by the University of New South Wales
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• pp.58-65
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• 2011

Construction Productivity is one of the most important elements in construction management. It is used in construction process scheduling and cost management, which are significant sector in construction management. It is important to make appropriate schedule and monitor how works are done within schedule. But construction project contains uncertainty and inexactitude, modifying construction schedule is being an issue to manage construction works well. Even though prediction and monitoring of productivity can be principal activity, it is hard to predict productivity with manager's experience and a standard of estimate. A large number of factors influencing productivity, such as drawing, construction method, weather, labor, material, equipment, etc. But current calculation of productivity depends on empirical probability, not consider difference of each influencing factor. In this research, the aim is to present a productivity predicting regression model of form work, which includes effectiveness of influences factors. 5 variables existed inside form work are selected by interview and site research based on literature review of existed various productivity influencing factors. The effectiveness and correlation of productivity influencing factors are analyzed by statistical approach, and it is used to make productivity regression model. The finding of this research will improves monitoring and controlling of project schedule in construction phase.

• 동의생리병리학회지
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• 제16권6호
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• pp.1100-1105
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• 2002

This thesis aims to provide an analytical basis for existing or new prescriptions based on the theory for properties and tastes of Korean oriental herbal medicines. To this end, prescriptions presented in 「the Various Changes in the Dominations of the Six Energies and their Relations with the Diseases」 of 『Plain Questions』 were analyzed based on the theory for properties and tastes of Korean oriental herbal medicines in 『Yellow Emperor's Canon Internal Medicine』. This thesis focused on symptoms and prescriptions based on the theory for properties and tastes of Korean oriental herbal medicines, which were described in 「the Various Changes in the Dominations of the Six Energies and their Relations with the Diseases」 of 『Plain Questions』 with regard to the year when Kweoleum is affecting the earth energy and the wind energy is partially over-abundant. Those symptoms and prescriptions originate from the theory of the five elements and six climates. The symptoms were analyzed from the perspective of physiology. The prescriptions were first analyzed based on the theory for properties and tastes of Korean oriental herbal medicines in 『Yellow Emperor's Canon Internal Medicine』. Then, a mix formula of oriental medicines pursuant to those prescriptions was studied. Lastly, proper prescriptions from 『Treatise of Cold-Induced Diseases』, which were in conformity with the above prescriptions, were selected. From the physiological point of view, symptoms with regard to the year when Kweoleum is affecting the earth energy and the wind energy is partially over-abundant can be, based on the theory of the five elements and six climates, diagnosed as the symptoms from impaired spleen and stomach due to excessive wind energy. Prescriptions from 『Treatise of Cold-Induced Diseases』pursuant to prescriptions based on the theory for properties and tastes of Korean oriental herbal medicines can be broken down into the following: pinellia decoction for reducing stomach-fire(Banhasasimtang); ginger decoction for reducing stomach-fire(Saenggangsasimtang); liquorice root decoction for reducing stomach-fire(Gamchosasimtang); and Chinese goldthread decoction(Hwangryentang). Therefore, symptoms of six kinds of weather presented in 「the Various Changes in the Dominations of the Six Energies and their Relations with the Diseases」 of 『Plain Questions』 can be analyzed from the physiological point of view. As a result, in addition to the methodology that analyzes existing prescriptions within the boundary of the theory for properties and tastes of Korean oriental herbal medicines in 『Yellow Emperor's Canon Internal Medicine』, it is expected that a theoretical basis for new prescriptions can be provided by analyzing prescriptions from 『Treatise of Cold-Induced Diseases』, based on prescriptions from the theory for properties and tastes of Korean oriental herbal medicines.

• 한국환경과학회지
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• 제29권3호
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• pp.257-272
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• 2020

This study investigates the temporal and spatial variations of marine meterological elements (air temperature (Temp), Sea Surface Temperature (SST), and Significant Wave Height (SWH)) in seven coastal waters of South Korea, using hourly data observed at marine meteorological buoys (10 sites), Automatic Weather System on lighthouse (lighthouse AWS) (9 sites), and AWS (20 sites) during 2013-2017. We also compared the characteristics of Temp, SST, and air-sea temperature difference (Temp-SST) between sea fog and non-sea-fog events. In general, annual mean values of Temp and SST in most of the coastal waters were highest (especially in the southern part of Jeju Island) in 2016, due to heat waves, and lowest (especially in the middle of the West Sea) in 2013 or 2014. The SWH did not vary significantly by year. Wind patterns varied according to coastal waters, but their yearly variations for each coastal water were similar. The maximum monthly/seasonal mean values of Temp and SST occurred in summer (especially in August), and the minimum values in winter (January for Temp and February for SST). Monthly/seasonal mean SWH was highest in winter (especially in December) and lowest in summer (June), while the monthly/seasonal variations in wind speed over most of the coastal waters (except for the southern part of Jeju Island) were similar to those of SWH. In addition, sea fog during spring and summer was likely to be in the form of advection fog, possibly because of the high Temp and low SST (especially clear SST cooling in the eastern part of South Sea in summer), while autumn sea fog varied between different coastal waters (either advection fog or steam fog). The SST (and Temp-SST) during sea fog events in all coastal waters was lower (and more variable) than during non-sea-fog events, and was up to -5.7℃ for SST (up to 5.8℃ for Temp-SST).